KendtEklund wrote:
Can HPDE instructors chime in if they'd be comfortable with this setup:
-Race driver seat w/Schroth 4-point harness
-Stock passenger seat w/ CG-Lock
Would adding a 4-point harness for the passenger be enough that most instructors would be OK?
Here's what the THSCC Tech Guide for HPDE (not Time Trial) says about restraint upgrades:
"The recommended solution for dual-purpose vehicles is to use 3 or 4 point harnesses that are designed as OEM replacement and have
US-DOT designations that meet FMVSS209 specifications. If a driver so chooses, competition harnesses can be used for the HPDE but they must,
without exception, be installed in compliance to the current SCCA GCR (Section 20)... OEM replacement harnesses having the DOT label will have been tested to FMVSS209 Federal Certification. They will be
specific to a make and model or be included on the list of make, models, and possibly seat type for which they are certified. It is mandatory for the driver/owner to produce this documentation to allow inspection of the vehicle. These documents can be obtained from the manufacturer and should be included with the harnesses. If this documentation is not present, it must be assumed the harnesses do not meet FMVSS 209 and will not be acceptable."
In other words, a Schroth 4-point set-up must be certified to the vehicle make/model AND the non-OEM seat combination. This "reference list", as Schroth calls it, is fairly lengthy for use with OEM seats, but is very sparse on after-market seats supported by their restraint systems.
For our HPDE program, our "Equal Protection" clause means that if you install a race seat for the driver, then you will need one for the Instructor. The driver race seat / OEM Instructor seat won't pass tech inspection. Then you will need to install 5 or 6-point harnesses for both driver and Instructor, or re-route the OEM 3-point system through the seat openings.
As an Instructor, I would much prefer the OEM 3-point system over the 4-point harness, even with a race seat, because it offers anti-submarine protection in a frontal impact. Besides, why fudge with a 4-point, when a very acceptable 5 or 6-point system is available for about the same price, and offers a much higher degree of protection. Race seats will come with the requisite openings to accommodate all the straps, so why not use 'em all?
Of course the other argument is: Shoulder restraint systems INCREASE the possiblity of injury in the event of a roll-over in a car that is not equipped with roll-over protection. But that's a whole 'nuther issue...
Just some food for thought...
